全功能键盘： 支持消抖、长按、组合按键、按两次、三次等-Full-function keyboard: Support debounce, long press, the combination of keys, press twice, three times, etc.

可以检测按键长按还是短按功能的一个按键驱动，里面实现了一个小型的状态机，蛮不错的哦。-Keys can be detected long press or short press function a key driver which implements a small state machine, Oh, pretty good.